Cheap Solar Cell Panel Small Solar Panel

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Loading Port:
China main port
Payment Terms:
TT or LC
Min Order Qty:
50000 pc
Supply Capability:
15000 pc/month

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Product Description:




1. monocrystalline silicon solar panel

2. high efficiency

3. 25 year module output warranty


1) 5 years for material & workmanship;

2) 12 years for 90% power output;

3) 25 years for 80% power output.


Packaging & Delivery

MOQ: 50pcs

Delivery Time: 10-20 days after order confirmation

Package: Wooden carton or pallet packing

Max Power (W)25w
Optimum Power Voltage18.40V
Optimum Operating Current1.36A
Open Circuit Voltage22.53V
Short Circuit Current1.45A
Cell quantity36 pcs



Solar cells and their teachnoleadges

The history of solar cell development is briefly outlined, and the properties of the sun and solar radiation are reviewed. Properties of semiconductor materials that are important in the design and operation of solar cells are reviewed. The physical mechanisms involved in the generation and recombination of excess carriers are discussed and the basic equations of device physics are given. Both the dark and illuminated properties of p-n junctions are analyzed. Energy conversion efficiency limits are discussed for the photovoltaic process as well as the effects of various nonidealities on efficiency. Techniques for measuring the efficiency of photovoltaic devices are also described. The standard technology for making silicon solar cells is reviewed, and improved silicon cell technology is discussed. Considerations relevant to the detailed design of silicon cells are discussed. Several alternative device concepts are outlined and the structure and properties of solar cells made on some of the more developed alternatives to single-crystal silicon are discussed. Concentrating systems and photovoltaic systems components and applications are described. The design of stand-alone, residential, and centralized photovoltaic power systems are discussed. 

Solar cells and their applications

Multiple solar cells in an integrated group, all oriented in one plane, constitute a solar photovoltaic panel or solar photovoltaic module. Photovoltaic modules often have a sheet of glass on the sun-facing side, allowing light to pass while protecting the semiconductor wafers. Solar cells are usually connected in series and parallel circuits or series in modules, creating an additive voltage. Connecting cells in parallel yields a higher current; however, problems such as shadow effects can shut down the weaker (less illuminated) parallel string (a number of series connected cells) causing substantial power loss and possible damage because of the reverse bias applied to the shadowed cells by their illuminated partners. Strings of series cells are usually handled independently and not connected in parallel, though as of 2014)individual power boxes are often supplied for each module, and are connected in parallel. Although modules can be interconnected to create an array with the desired peak DC voltage and loading current capacity, using independent MPPTs (maximum power point trackers) is preferable. Otherwise, shunt diodes can reduce shadowing power loss in arrays with series/parallel connected cells.


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Q:Can the solar powered cells really work better than the normal cells?
Because of the different ways of generating the power, the solar powered cells definitely better than the normal cells in the modern world.
Q:Can solar panels be charged with light?
Since the output power of solar modules depends on factors such as solar irradiance and solar cell temperature, it is not recommended to use light charging, efficiency is not only very low, and also meaningless.
Q:How can I buy the solar cells wholesale ?
You can talk to the manufacurers directly and ask them to send you the quotation list based on what you need and how many solar cells you need.
Q:How to explain to students how the solar cells are made?
The Manufacturing Process of solar cells is a bit difficult to explain, but I can send you the details through email if you want.
Q:How do solar cells work to become the solar energy?
Solar Energy Materials & Solar Cells is intended as a vehicle for the dissemination of research results on materials science and technology related to photovoltaic, photothermal and photoelectrochemical solar energy conversion.
Q:The history of solar cells
lithium sulfur dioxide battery and lithium thionyl chloride battery is very characteristic. Their positive electrode active material is also the solvent of the electrolyte. This structure only occurs in the electrochemical system of non-aqueous solution. Therefore, the research of lithium batteries has also promoted the development of nonaqueous system electrochemical theory. In addition to the use of various non-aqueous solvents, people also carried out the polymer thin film battery research.
Q:Is there any easy way to make a solar cell? I want to make a DIY solar cell with my child at home.
A solar cell is converts sunlight into the power, in this way, you can just use the silicon.
Q:24V 200W solar cells can charge 12V battery?
24-volt battery pack to 12-volt battery charge is possible, because the battery block resistance is large, allowing the output short-circuit.
Q:What is the best way to deal with surplus solar cells abandoned after burning?
This is a very commonly mentioned topic related to environmental protection, because the abandoned solar cells have battery surplus could be very bad for our environment. Scientiests are dicussing ways to deal with that but there is still not a good solution.
Q:How to get high voltage, high current output of solar cells
A reasonable series of parallel can be, and increase the number of sub-batteries
Our company is a High-tech enterprise, who is professional on manufacturing on solar photovoltaic products. We mainly produce the solar module and system. Our annual production capacity of solar module is 50MW.Meanwhile,we also undertake the design, installation and serviceonbothon-grid & off-grid system for home and power plant.

1. Manufacturer Overview

Location Zhejiang,China (Mainland)
Year Established 2006
Annual Output Value Above US$100 Million
Main Markets North America 2.90%
South America 25.60%
Eastern Europe 4.83%
Southeast Asia 9.18%
Africa 1.16%
Mid East 2.90%
Western Europe 19.81%
Central America 2.41%
Northern Europe 9.95%
Southern Europe 8.21%
South Asia 0.97%
Domestic Market 12.08%
Company Certifications ISO 9001:2008

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Rotterdam,Hamburg
Export Percentage 81% - 90%
No.of Employees in Trade Department 6-10 People
Language Spoken: English, Chinese, Japanese, German, French
b)Factory Information  
Factory Size: 3,000-5,000 square meters
No. of Production Lines 5
Contract Manufacturing OEM Service Offered Design Service Offered Buyer Label Offered
Product Price Range Low and/or Average